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Doctor insights on: New Peanut Allergy Test

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Looking for nut allergies symptoms, eg, cashew allergy?

Looking for nut allergies symptoms, eg, cashew allergy?

Varies: Allergic reactions varies with individuals.Some can consume cashews, while to others they are toxic.Reactions can be mild or severe. Mild reactions include nausea , vomiting, diarrhea. Skin rash and itching on the skin.The eyes , roof of mouth and throat may itch.Severe reactions include difficulty breathing, swelling to face and throat.The most dangerous is anaphylaxis.This can be fatal ...Read more

Dr. Duane Gels
118 doctors shared insights

Peanut Allergy (Definition)

A peanut allergy is an exaggerated immune response due to exposure to peanut protein. The reaction can present with typical symptoms of hives, respiratory symptoms (cough, wheeze, shortness of breath), GI symptoms (abdominal pain, vomiting), swelling, loss of consciousness, and can be fatal. Symptoms typically present within minutes to a couple hours ...Read more


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Does an allergy scratch test test for mold and dust allergies?

Does an allergy scratch test test for mold and dust allergies?

Yes: Skin allergy testing can check for number of allergens. These include environmental and food allergens. ...Read more

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Postive, high, rast test results - only hayfever and animal reactions though? Are rast tests reliable?

Postive, high, rast test results - only hayfever and animal reactions though?  Are rast tests reliable?

RAST vs skin tests: The reason allergists prefer skin tests to rast tests is because the skin tests show your body's biological response to allergens. Rast tests only measure the amount of antibody and do not predict its clinical binding and symptom-provoking abilities. That said, no test is perfect. All have to be compared to your experience and correlated with your history. Allergists spend more time doing this. ...Read more

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Can environmental allergies (food, pollen, dust mites, contrast dye, penicillin) cause a high positive ANA?

Can environmental allergies (food, pollen, dust mites, contrast dye, penicillin) cause a high positive ANA?

I have seen this: While the +ANA is suggestive of SLE there can be other causes - other connective tissue disease, autoimmune thyroid disease, auto immune hepatitis to name some. I have seen a lot of people with + ANAs who only have as another problem a history of allergic reactions and I am convinced that thee allergic reactions can cause a + ANA. Everyone can have very low titters (amount) of ANA. ...Read more

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Does desensitization vaccination works for allergic asthma?I got positive skin prick tests for 4-5 allergens....

Does desensitization vaccination works for allergic asthma?I got positive skin prick tests for 4-5 allergens....

Yes: It is effective about 80% of the time. However I'd doubt that getting allergy shots for 4-5 allergens would work for you since most people are allergic to dozens of airborne allergens except in the case of occupational exposure. ...Read more

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Does allergy testing detect all allergies?

Does allergy testing detect all allergies?

No: Appropriate allergy testing is guided by the patients history and physical examination. Based upon this one's allergist will make a decision what to be tested for. The test, particularly for outdoor allergens is based upon the common allergens is that particular agricultural zone. Does this mean that all allergens will be tested no. ...Read more

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What is an allergy test like to test for pollen allergies?

What is an allergy test like to test for pollen allergies?

Easy: Skin testing for pollen allergy entails: cleaning the skin with alcohol, number the skin to keep track of the different allergens tested, a "prick" with skin test device that has a drop of the allergen on the tip and then waiting 15-20 minutes to see if a reaction occurs. The skin test feels like a mosquito bite it is really quite painless. ...Read more

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Hi, if a person has a perennial ryegrass allergy, are they also allergic to rye breads and other rye items?

Hi, if a person has a  perennial ryegrass allergy, are they also allergic to rye breads and other rye items?

No: Allergy is to the rye grass pollen when inhaled, affects the respiratory passages either upper, nose and sinuses, or lower, bronchi in lungs, and has nothing to do with rye seeds ...Read more

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Have hives - suspect pecan allergy. Now stopped all tree nuts. If it is tree nut allergy, how long might hives continue to appear?

Have hives - suspect pecan allergy.  Now stopped all tree nuts.  If it is tree nut allergy,  how long  might hives continue to appear?

Why nut allergy?: Unless you have known nut allergy, the likelihood of new food allergy at your age is unlikely. If your hives are truly due to pecan allergy, they would resolve within a few days, more rapidly if you take an antihistamine such as fexofenadine 180mg, or Cetirizine 10mg for a couple of days. If they persist and do not respond to the above, see a physician. ...Read more

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Can you still be lactose intolerant even though the IgE allergy test claims no allergy?

Can you still be lactose intolerant even though the IgE allergy test claims no allergy?

Yes: Lactose intolerance is due to the lack of lactase in the GI tract. This is te enzyme tht digests lactose. Without it a person gets gas, cramping and diarrhea despite not having any allergy. Bacteria in the colon cause the gas and the sugar(lactose) acts as a laxative. ...Read more

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I'm a chronic hives sufferer w/multiple med allergies, too. Tested negative for food allergies, but should I avoid high allergy foods (peanut, fish)?

I'm a chronic hives sufferer w/multiple med allergies, too. Tested negative for food allergies, but should I avoid high allergy foods (peanut, fish)?

No: You need to see an allergist to help you sort out your medication issues. There is no link between food and drug allergies. ...Read more

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If food allergy prick test is negative (mild redness) and blood rast test negative is it mean you are not allergic to foods?So y get reaction to foods

If food allergy prick test is negative (mild redness) and blood rast test negative is it mean you are not allergic to foods?So y get reaction to foods

Not 100%: If both tests are negative, the chance of being allergic to that food is very very small. However when the history of a food allergy is strong, and the tests were negative, i often ask the patient to bring in the fresh food for the testing instead of relying on commercial food extracts. If the person is still quite concerned over it a challenge test can be done at the office. ...Read more

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When allergy to milk based formula shows upin new born?

When allergy to milk based formula shows upin new born?

Hydrolyzed : Milk protein allergy shows up in babies fed formula who have bloody stool and failure to thrive. In this instance your pediatrician can recommend a hydrolyzed formula. However, breast milk should also be easily digested in this case and would be the best option. Many people mistake colic for milk allergy. Colic is rarely improved by changing formula. 50% allergic to cow milk are allergic to soy. ...Read more

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Can skin prick testing for food allergies be 100% reliable?

Can skin prick testing for food allergies be 100% reliable?

Nothing is perfect: No test is 100% reliable - neither skin testing nor blood testing. That's why allergists try to order relevant tests selected based on a comprehensive medical history and physical examination. The results must be interpreted & used as clues to a solution. They're not an answer in themselves. I'm frequently called by doctors who order allergy tests & then want me interpret them over the phone. ...Read more

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Igg allergy test shows moderate allergy to all dairy and eggs. Test prompted by chronic nausea, nothing else. Are these tests reliable?

Igg allergy test shows moderate allergy to all dairy and eggs. Test prompted by chronic nausea, nothing else.  Are these tests reliable?

Food allergy test: Igg tests for food allergies have not been shown in the litterature to have any clinical significance and therefore are not considered reliable. Your symptoms are not allergic in nature, i would look for a gastrointestinal cause. ...Read more

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A friend's blood allergy test showed multiple food intolerances. I've read that allergy blood work is not reliable. Does she have to eliminate foods?

Possibly: I am not a fan of blood tests for food allergy. It never seemed to correlate well clinically. I suggest an elimination diet. That is eliminate one item for a few weeks and see how you feel. If there is no change then try another item and so on. ...Read more

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What is blood test for? What other tests are available for atopic dermaitis, allergies, food allergies? Im trying to figur eout food allergies

What is blood test for? What other tests are available for atopic dermaitis, allergies, food allergies? Im trying to figur eout food allergies

Skin test: Skin tests performed by board certified allergists are very reliable and give you immediate results on a variety of allergies, food, environmental allergens, etc. Consult an allergist for your answers. ...Read more

Dr. John Chiu
2,661 doctors shared insights

Allergies (Definition)

Allergies occur when your immune system is triggered by envirionmental factors it should ignore--for example, pollen in the air, or dander on a cat or dog--and creates cells to fight against them. An allergic reaction typically causes itching, congestion, or drainage, and ...Read more